There are few things more frustrating in a home than a door that sticks. You grab the knob, give it a solid yank, and instead of a smooth swing, the door groans, scrapes, and catches on the frame. It might be a seasonal problem that comes and goes with the humidity, or it could be a permanent nuisance that only gets worse with time. The good news is that you almost certainly do not need to call a professional for this job. Fixing a sticking interior door is one of the most satisfying and straightforward DIY projects a homeowner can tackle, and it usually takes less than an hour from start to finish.

The first step is to figure out exactly where the door is sticking. Open and close the door slowly and watch carefully for the spot where the resistance happens. Is it rubbing along the top edge? Grinding against the latch plate? Or scraping across the bottom threshold? You can often narrow it down by looking for a shiny spot on the edge of the door or a scuff mark on the frame. These telltale signs are your door’s way of saying “right here is the problem.“

If the door is sticking along the latch side, meaning the side opposite the hinges, the most common cause is that the hinge screws have loosened over time. This allows the door to sag slightly, throwing off the alignment. The fix here is almost laughably simple. Take a look at the screws holding the hinges to the door frame. Usually, you will find that the top hinge screws are the culprits. Grab a screwdriver and tighten them up. If the screw just spins and spins without catching, you have a stripped hole. Do not panic. Pull the screw out, jam a couple of wooden toothpicks coated in wood glue into the hole, break them off flush, and then reinsert the screw. The toothpicks give the threads something to bite into, and you will have a solid connection that holds the door in place.

Sometimes the problem is not loose screws but a door that has simply swelled from humidity. Wood is a natural material, and it breathes with the seasons. In the summer, when the air is damp, interior doors can expand just enough to stick. In the winter, the same door might swing freely again. If you suspect humidity is the issue and you have already checked the screws, you will need to remove a little material from the door itself. The easiest way to do this is to mark the spot that is rubbing with a pencil, take the door off its hinges, and sand down that edge with a medium-grit sandpaper. Work slowly and check your progress often. It is much easier to take off a little more later than to put wood back on.

If sanding feels like it will take forever, you can use a hand plane or a block plane to shave a thin curl of wood off the edge. This sounds intimidating, but a sharp block plane is actually very safe and easy to control on a soft interior door. The trick is to plane from the outer edge toward the center, working in the direction of the grain to avoid tearing the wood. After you remove a thin shaving, test the door by putting it back in the frame. You want just enough clearance so the door swings free without a wobble.

Sticking at the top of the door usually means the house has settled a bit over time. This is common in older homes. Fixing a top stick is the same basic process. Take the door down and sand or plane the top edge. Keep in mind that if you take too much off, you will have a noticeable gap, so go slowly. For a door that sticks at the bottom, be careful. Bottom edges often have a gap specifically to allow for airflow under the door. If the door is scraping on the carpet, you might simply need to trim a bit off the bottom. But if the door is dragging on a hard floor because the hinges have loosened, tightening those screws might solve the problem without any cutting at all.

One more thing to check before you start removing wood. Sometimes the strike plate, the metal piece on the door frame where the latch goes into the hole, is slightly misaligned. This will make the door feel like it is sticking when you try to close it all the way. You can test this by rubbing a crayon or a bar of soap on the latch. Close the door and see where the mark transfers to the strike plate. If it is off by just a hair, you can file the hole in the strike plate to make it larger. A simple metal file will do the trick, and you will get a perfect fit without touching the door itself.

Fixing a sticking door is one of those rare home repairs that gives you an immediate, tangible reward. The next time you walk up to that door and it opens with a smooth, silent glide, you will feel a quiet sense of satisfaction. You saved yourself the cost of a service call, you learned a skill that will work for every door in your house, and you made your home a little more pleasant to live in. That is the whole point of DIY. So grab a screwdriver, look for that shiny spot, and get to work. Your door is waiting for a little bit of simple attention.